SEVERE WEATHER · 25 OCT 2026
Colombo Braces for 83 mm of Rain, With Monday the Wettest Day
Colombo is set for about 83 mm of rain over three days, with the heaviest falls on Monday 26 October and a second burst on Wednesday 28 October.
AT A GLANCE
- About 83 mm of rain expected in Colombo over the next three days
- Monday 26 October is the wettest day, with 43.2 mm
- A second heavy spell arrives on Wednesday 28 October
- Areas about 30 km south of the city could see the most rain, around 105.6 mm
Colombo is heading into a very wet few days. Heavy rain is forecast to total about 83 mm over the next three days, with the worst of it on Monday 26 October and a second heavy spell on Wednesday 28 October.
Colombo rain forecast: day by day
Monday 26 October is the day to take most seriously. Around 43.2 mm of rain is expected, which is more than half of the three-day total falling in a single day. Winds reach up to 35 km/h, the strongest of the period, so the rain will feel more persistent out in the open. Temperatures stay close to constant, between 25°C (77°F) and 27°C (81°F).
Tuesday 27 October brings a break from the heaviest rain. About 8.9 mm is forecast, so it will still be a rainy day, but showers should be far lighter and winds ease to 29 km/h. It is the best window of the week for getting out and about.
Wednesday 28 October turns wet again. Heavy rain returns with about 30.9 mm, which means any ground that dried out on Tuesday will soak up water quickly again. Highs reach 28°C (82°F) and winds stay at 29 km/h.
When is the rain worst, and when does it ease?
The peak is Monday 26 October. After a lighter Tuesday, Wednesday is the second-wettest day. By Thursday 29 October the rain is still in the forecast, at around 10.7 mm, but the totals are much lower and winds drop to just 13 km/h. That makes Thursday the calmest day of the run, even though the sky remains wet. Highs climb to 29°C (84°F).
How much rain around Colombo?
Over the three days, the rain is not spread evenly. The city is forecast to receive about 83 mm. Areas about 30 km to the south look wettest, with around 105.6 mm. To the east, totals are similar to the city at about 83.3 mm. Areas about 30 km north see around 72.8 mm, while the west, about 30 km away, is the driest at roughly 61.4 mm.
In practical terms, if you are travelling south out of the city, expect conditions to be wetter than at home.
What it means for people in Colombo
- Plan Monday carefully. If you can move errands, deliveries or outdoor work to Tuesday, you will avoid the heaviest rain.
- Allow extra travel time. Heavy rain slows roads and can make surfaces slippery, especially on Monday and Wednesday.
- Take care on southbound journeys. The area about 30 km south has the highest forecast rainfall.
- Use Tuesday wisely. It is the lighter day, a sensible time for shopping, getting to appointments and preparing for the second spell.
- Keep warm-weather habits. Temperatures stay in the mid to high 20s, so rain gear that breathes is more comfortable than heavy waterproofs, and drinking water still matters.
The outlook
Expect a wet start, a lull, then another heavy burst before things settle on Thursday 29 October. Check the latest forecast each morning, because rainfall totals can shift from one update to the next, and keep plans flexible on Monday and Wednesday.
Day by day
| Day | High | Low | Rain | Wind | Sky |
|---|---|---|---|---|---|
| Monday 26 October | 27°C | 25°C | 43.2 mm | 35 km/h | heavy rain |
| Tuesday 27 October | 28°C | 24°C | 8.9 mm | 29 km/h | rain |
| Wednesday 28 October | 28°C | 24°C | 30.9 mm | 29 km/h | heavy rain |
| Thursday 29 October | 29°C | 25°C | 10.7 mm | 13 km/h | heavy rain |
Forecast retrieved 25 October 2026, 20:01 UTC, for Colombo and four points about 30 km around it. Days are local time (Asia/Colombo).
